ACOEM Met One Instruments GAS-1060, Руководство пользователя

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Operation Page 47
instrument is sampling and press Accept .
Zero Calibrate NO2 This command is used to correct the zero calibration setting. This
option should be used only when zero gas is running through the
reaction cell (refer to Section 5 before using this command).
Manual Background Immediately perform a background.
Pressure Calibration Menu This menu allows the user to calibrate the pressure sensors (refer
to Section 3.4.11).
Pressure NO2 This field displays the measurement cell pressure measured during
the last calibration.
Temperature Measurement Cell temperature when the last span calibration was
performed.
3.4.10.1 Manual Mode
These items appear in the Calibration Menu when Cal. Type is set to Manual .
Cal. Mode When calibration type is set to Manual the instruments
operational mode can be chosen from the following:

Measure : Is the normal measurement through the sample port.

Zero : This mode will take air through the calibration port so that
a zero calibration can be performed. Data is flagged as zero
data.

Span : This mode will take air through the calibration port so
that a span calibration can be performed. Data is flagged as
span data.

Cycle : Performs a zero and a span Cal. Mode and then returns
to measure mode. The length of time spent measuring each
calibration mode is set in
Cycle Time (refer to Section 3.4.10).
While the instrument is still in the warm-up period (refer to
Section 3.1) the
Cal. Mode cannot be changed from Measure
mode.
3.4.10.2 Timed Mode
These items appear in the Calibration Menu when Cal. Type is set to Timed .
Date Enter the date for the next calibration to start.
Time Enter the time that the calibration will be performed. The time is
set using a 24 hour clock.
Repeat This field indicates the delay period; once the specified amount of
time has lapsed the calibration will automatically run again. The
user can edit this field (from 1 to 20,000 units).
Units This is where the user can define the type of units for the Repeat
delay period. For example: A repeat of “ 3 ” and units of “ Days”
means that a calibration will automatically be performed every
three days.